For gamma - radiation detection and spectrometry, assemblies having scintillation
crystals and a photomultiplier tube (PMT) assembled in a hermetically sealed
body have been developed and are now in production.

Such assemblies are produced in different designs depending on of the size of
scintillators and PMT as well as on the intended application and working
conditions (general-purpose, heat and vibration resistant, spectrometric,
etc.)

The basic types of assemblies and scintillator dimensions are presented in the
Tables.

Note:The assemblies can be provided with PMTs of other types than specified. PMTs
supplied by the customer can be used in the assembly.

We develop custom-made assemblies according to customers' specification. The
assemblies can be produced in low-background version.

The assemblies can be provided with built-in voltage divider and
preamplifier.

The detectors and assemblies for geophysical (well logging) and
special applications can be produced in ruggedized versions. These detectors
operate under high temperature and mechanical load conditions.